Buzz Lighthead

1999 Lumina alarm problem

I noticed yesterday as I walked away from my car that the auto alarm and door locks did not work.The keypad will lock and un-lock the doors,but the alarm fails to arm,you normally hear a chirp when you close the door.Also whenever you lock or un-lock the doors you arm and disarm the alarm,this is not working.Is it possible I hit something by accident or is it a faulty relay etc.If I hold the keypad for a few seconds the alarm will go off,but I still want the alarm to arm itself on its own.Any help will be greatly appreciated.

Joe_F

Aftermarket alarm or GM factory alarm?

If aftermarket, back to installer. Most aftermarket alarm installs are hokey and troublesome.